Window and Tabs API

Opera Unite, Opera Widgets, and Opera Voice Discontinuation

Opera Unite and Opera Widgets will be off by default in Opera 12.00, and will eventually be phased out of the Opera browser in the future. Voice support will be removed as of Opera 12.00, as the voice-detection library is no longer supported by the third-party vendor.

Developers are encouraged to move their solutions to the extensions platform, for information on converting a Widget to an extension, please see this article.

Redesigned Opera Help

Opera Help ( F1 or ⌘ + ? for Mac) has been redesigned to be more user-friendly, and also align it more with the browser look and feel. To improve discoverability, Opera Help topics have been broken up and restructured into categories based on what users want to do, rather than reflect the menu structure. This is the first phase of a long-term project to improve Opera Help.

Web Specifications Support

Opera 12.00 will include changes in the Opera Presto 2.10 engine up to core-integration-point 289.

WebRTC

Initial support for real-time communication has been added. Allowing the source of HTML5 <video> to be set to the user's webcam.